PeterSuber's original rules set is available on the Web at: 
http://www.earlham.edu/suber/writing/nomic.htm.
They can also be FTP'ed from 
ftp://ftp.cse.unsw.edu.au/pub/users/malcolmr/nomic/ in plain text, postscript and acrobat formats.
They have also been published in several books, which are listed in NomicBooks.
The original ruleset has also been translated into several other languages. Copies in German, Spanish, Swedish, French and Dutch are available from the NomicFtpRepository. Thanks to the people who have sent me these. If anyone has any other translations, please let me know.
See the NomicDatabase for more NomicVariants.